A newly published study points to a possible step forward in efforts to create a cannabis breathalyzer, offering early evidence that a compact and affordable device could detect recent cannabis use without requiring laboratory testing.
The research, led by Virginia Commonwealth University’s Emanuele Alves, focuses on addressing a long-standing gap in roadside testing. While alcohol impairment can be measured quickly with breath-based tools, law enforcement has lacked an equivalent method for THC, the primary psychoactive compound in cannabis. As legalization expands across multiple states, the demand for fast and dependable roadside screening methods has grown more urgent.
The team experimented with cartridges produced through 3D printing, combining gelatin with Fast Blue chemical dye. This setup allowed researchers to observe color-based reactions when exposed to cannabinoids. According to the findings, the system successfully identified delta-9 THC, as well as CBD and CBN, across different sample types.
The device detected cannabinoid concentrations ranging from 10 to 100 nanograms. Researchers used color-space modeling to interpret the results, identifying distinct visual patterns. Two main groupings emerged, indicating that samples containing CBN and delta-9 THC could be distinguished from those containing CBD based on color variation.
The study describes these results as an early foundation for developing a portable testing tool. While further validation and real-world trials are still required, the researchers say the concept shows promise for use in roadside or on-site screening scenarios.
Funding for the project came in part from the U.S. Department of Justice, which also made the findings publicly available through its National Criminal Justice Reference Service. The agency noted that the conclusions presented in the study do not necessarily represent its official views.
Encouraged by the results, the research team has filed a patent application with the U.S. Patent & Trademark Office outlining a proposed prototype. The envisioned device includes three main components: a mouthpiece to capture exhaled breath, a cartridge where airborne particles interact with the testing material, and a detection chamber that produces a visible color change when THC is present. A positive result is indicated by a dark red coloration.
The study also highlights the broader public safety context, noting that while awareness of alcohol-related driving offenses is widespread, many people remain less informed about the legal risks of driving under the influence of cannabis, whether used alone or alongside other substances.
Researchers say their work establishes a chemical and technical starting point for future development. They suggest that with further refinement, such a device could support efforts to improve road safety and provide a practical way to monitor recent THC use outside of laboratory settings.
The marijuana industry, including established companies like Curaleaf Holdings Inc. (CSE: CURA) (TSX: CURLF), is likely to be cautiously optimistic about this device until it proves its efficacy in the field.
About CNW420
CNW420 spotlights the latest developments in the rapidly evolving cannabis industry through the release of an article each business day at 4:20 p.m. Eastern – a tribute to the time synonymous with cannabis culture. The concise, informative content serves as a gateway for investors interested in the legalized cannabis sector and provides updates on how regulatory developments may impact financial markets. If marijuana and the burgeoning industry surrounding it are on your radar, CNW420 is for you! Check back daily to stay up-to-date on the latest milestones in the fast -changing world of cannabis.
To receive SMS alerts from CNW, text CANNABIS to 888-902-4192 (U.S. Mobile Phones Only)
For more information, please visit https://www.CannabisNewsWire.com
Please see full terms of use and disclaimers on the CannabisNewsWire website applicable to all content provided by CNW, wherever published or re-published: https://www.CannabisNewsWire.com/Disclaimer
CannabisNewsWire
Denver, CO
www.CannabisNewsWire.com
303.498.7722 Office
Editor@CannabisNewsWire.com
CannabisNewsWire is powered by IBN
